Method Statement for Installation of Clean Agent Fire Suppression System
Context Plus
Method Statement
for
Installation of Clean Agent
Fire Suppression System
September 15, 2016
Revision 0.0
Page 1
Method Statement for Installation of Clean Agent Fire Suppression System
Table of Contents
Notice ...................................................................................................................................................... 3
1
Objective ......................................................................................................................................... 4
2
Scope ............................................................................................................................................... 4
3
Handling and Storage ...................................................................................................................... 4
4
Installation....................................................................................................................................... 4
4.1
5
Conduits and Cables Installation ............................................................................................. 4
4.1.1
Measurement / Location of G.I. Conduit and Marking of Conduit Route........................ 4
4.1.2
Fixing of Surface GI Conduit ............................................................................................ 4
4.2
Clip Cables Installation ............................................................................................................ 5
4.3
Installation of Fire Suppression System Devices ..................................................................... 5
4.4
Installation of Control Panels .................................................................................................. 6
4.5
Clean Agent Fire Suppression System Installation................................................................... 6
4.5.1
Cylinder Installation......................................................................................................... 6
4.5.2
Cylinder Support Installation ................................................................................................7
4.5.3
Cylinder to Bracket Installation ....................................................................................... 7
4.5.4
Painting of Pipes .............................................................................................................. 7
4.5.5
Pipe Support Installation ................................................................................................. 8
4.5.6
Pipe Grooving Procedure................................................................................................. 8
4.5.7
Pipe Threading Procedure ............................................................................................... 8
4.5.8
Pipe Coupling Installation Procedure .............................................................................. 9
4.5.9
Mechanical-T Installation ................................................................................................ 9
4.5.10
Pipe Screw Fitting Installation ....................................................................................... 10
4.5.11
Nozzle Installation ......................................................................................................... 11
Testing and Commissioning ............................................................................................................... 12
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Method Statement for Installation of Clean Agent Fire Suppression System
Notice
Our information is provided in good faith and believed to be accurate, but does not claim to be
all-inclusive. However, the information provided in our method statement may contain technical
inaccuracies and typographical errors. ContextPlus may make improvements or changes in the
information provided in our manual at any time without notice or liability as new information is
obtained. ContextPlus does not make any warranty for the accuracy and completeness of the
information contained in our manual.
By reading and using the information provided in our method statement, you have agreed that
ContextPlus and its subsidiaries or affiliates shall not be liable to you for any losses, damages,
fees, expenses, claims, actions, etc. arising from and connected with our information under any
circumstance.
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Method Statement for Installation of Clean Agent Fire Suppression System
1 Objective
This document is used to describe the standard procedure on how the Fire Suppression System is
installed.
2 Scope
This procedure covers complete Fire Suppression System installation in the project site which is
carried out by Installation Company.
3 Handling and Storage
Prior to installation, all delivered components shall be checked visually all its quantity and shall be
verified in accordance to Bill of Materials provided and shall be inspected if there is any evidence of
damage.
4 Installation
4.1 Conduits and Cables Installation
4.1.1 Measurement / Location of G.I. Conduit and Marking of Conduit Route
1. Proposed locations of the conduit as per engineering drawing shall be checked and reviewed
by site supervisor thoroughly.
2. Length of G.I. conduit required for installation shall be measure by site supervisor and shall
give proper instruction to the workers in preparing these conduits. In order not to delay the
project, project shall be planned properly.
3. As for conduits horizontal installation, mark first a straight lines using string coated with
white powder, and nail both ends. Before marking a straight line, ensure that the string
tension is enough by plucking and releasing the string. As for conduits vertical installation,
the same procedure shall be followed as mentioned steps from 1 to 3.
4.1.2 Fixing of Surface GI Conduit
1. When strings and the nails have been already disassembled, holes shall be drilled along the
white lines. Drop-in anchor bolt shall be inserted into the holes prior to rod installation.
2. G.I. conduits shall be clipped to the rods using fasteners.
3. When required, the G.I. conduit shall be cut to its required length and be threaded. The
process of threading is through stocks and dies. Stocks and dies shall be rotated by two and
a half turns in a clockwise direction and in clearing away the accumulated debris, it shall be
rotated in a counter clockwise direction. In this manner, thread will be cut cleanly and
efficiently without any cause of stripping. After everything is completed, file across the
leading edge of the thread and reamer the inner periphery to prevent cable snagging on
burred edges.
4. Horizontal or vertical runs shall be supported by saddles at an interval of 1 meter maximum.
Bends shall be supported with two saddles on each side.
5. After every two bends or more than 15 meters of straight runs shall be provided with draw
in boxes.
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Method Statement for Installation of Clean Agent Fire Suppression System
6. Two lengths of conduits shall be joined by conduit sockets with thread. To link up conduits
pipes, usually cross-boxes, “Tee” boxes, “Thru” boxes are normally used for crossing or
ending or at ‘T’ Junction.
7. After fixing the conduits, site supervisor shall check and inspect thoroughly the site. This is to
ensure that installations are based on the engineering drawings.
8. Conduits shall be tightened the full saddle using screws.
9. When extending the conduits length by connecting another length of conduit, GI coupler
shall be used.
4.2 Clip Cables Installation
Fire Suppression System electrical cabling can be installed either after marking the cable route in
accordance to approved shop drawing or installing the cables using the cable clips using screw.
4.3 Installation of Fire Suppression System Devices
Nozzle
Smoke Detector
Strobe Light
Fire
Strobe Light
Release
Alarm Bell
Alarm Horn
Control Panel
Manual Release
Switch
Abort Switch
Cylinders
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Method Statement for Installation of Clean Agent Fire Suppression System
The following are the procedure on how to install the fire suppression system devices:
1.
2.
3.
4.
5.
Location of the devices shall be marked in accordance to approved shop drawings.
Civil contractor shall mark for the cutting location.
Base of the devices shall be fixed the using screw.
Cables shall be marked in accordance to the requirements (IN/OUT LOOP) if required.
Cables to all devices shall be terminated in accordance to the product installation guide
manual.
4.4 Installation of Control Panels
The following are the procedure on how to install the fire suppression system panels:
1.
2.
3.
4.
5.
6.
Location of the panels shall be marked in accordance to the approved engineering drawings.
Civil contractor shall mark for the cutting location accurately.
PVC conduits shall be installed inside the wall cutting as required.
GI conduits/trunk shall be installed to run the cable to the control panel.
Conduit shall be provided also for system main power supply.
Holes are to be drilled on the panels, where necessary, thereafter, adapters shall be
installed.
7. The panel shall be installed with screw.
8. The cables are to be run through the conduits/trunks up to panel.
9. Use tags to identify the cables. At the end of each cable, ferrules shall be installed.
10. Fire Alarm Circuit Board shall be the termination point for the cables in accordance to the
approved shop drawing and product catalogue.
4.5 Clean Agent Fire Suppression System Installation
4.5.1 Cylinder Installation
1. The cylinders should be located as close to the protected hazard area as possible. The
assemblies shall be located in a readily accessible location to allow for manual actuation and
ease of inspection, service and maintenance.
2. The cylinders shall be located in an environment protected from the weather and where the
ambient temperature does not exceed 54˚C (130˚F) nor fall below 0˚C (32˚F). External heating
or cooling may be required to maintain this temperature range. Cylinders must be located
and mounted where they will not be subject to accidental damage or movement. Suitable
protection to prevent accidental cylinder damage or movement must be installed when
necessary to prevent accidental discharge, bodily injury or property damage.
3. Position cylinders in designated location and secure in place with cylinder bracket and
attaching hardware. ContextPlus cylinders to that valve outlet are angled towards discharge
piping.
4. Connect flexible discharge hose to cylinder outlet port. Repeat for each cylinder in system.
5. Connect Copper tubing or pilot hose between the pilot cylinder or the Master Cylinder and
the first slave cylinder, pneumatic actuation port. Repeat for the other slave cylinders.
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Method Statement for Installation of Clean Agent Fire Suppression System
6. Each cylinder bracket must be securely anchored to structural supports to absorb the force
generated by cylinder discharge.
4.5.2 Cylinder Support Installation
1. Locate the drill holes coordinates for the bracket to be mounted and drill the holes on the
wall.
2. Use drop-in anchor bolts to mount the bracket on the wall.
4.5.3 Cylinder to Bracket Installation
The cylinder brackets are manufactured from galvanized steel band. They are formed to the
radius of the cylinder with flanges for bolting and to continuous slot metal framing channel (12gauge steel with corrosion-resistant paint or galvanized 1100 H Unistrut). The channel is to be
supplied by the installer. The cylinder bracket must be secured to a surface such that the bracket
will withstand a load up to 5 times of the cylinder weight. This precaution is to have the bracket
safely supports the weight of the cylinder and the reaction force of the Clean Agent when
discharge.
One cylinder bracket is required for the 20 lb, 35 lb, 70 lb, 100 lb, 150 lb, and 250 lb cylinders. For
the 375 lb, 560 lb, 800 lb, 1000 lb and 1200 lb cylinders, two bracket straps should be used. All
cylinders must be mounted vertically only, with valve up, resting firmly on the floor.
4.5.4 Painting of Pipes
1. Clean the hot dipped galvanized Pipe
Using cotton rag, remove any dirt or grease on the hot dipped galvanized pipes.
2. Paint the Pipes with Zinc Chromate Primer
Paint the galvanized pipes evenly on both sides with 1 layer undercoat of Zinc Chromate
Primer.
3. Wait for Dry
Leave the painted pipes in a well-ventilated area for 24 hours in order for the paint to dry.
4. Paint with Finish Coat
Paint a finishing coat of Nippon 9000, Vermilion #9004-for metal with 1 layer on both sides
evenly. Leave it to dry.
5. Install the Pipes
Install the pipes when it is dry.
6. Paint Final Layer
Paint the final layer of paint (Nippon 9000, Vermilion #9004-for metal) on both sides evenly
after installation
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Method Statement for Installation of Clean Agent Fire Suppression System
4.5.5 Pipe Support Installation
1. Location of the hanger shall be identified the actual in accordance to the approved shop
drawing. Mark the position shop drawing. Mark the position for the installing the drop in
anchor after coordination with structural engineer
2. Required length of the GI angle shall be cut in accordance to site condition.
3. Construct the support by welding the angles in accordance to the approved shop drawing.
4. Holes shall be drilled on the constructed support.
5. Check and mark the location of the hole to be drilled based on the approved shop drawing.
6. Drop in anchor shall be inserted in the hole.
7. GI angles on drop in anchor shall be tightened using bolts
8. At each directional change fitting, firm and rigid bracing shall be required.
4.5.6 Pipe Grooving Procedure
1. Required length of the pipe to be grooved shall be cut. Ensure that the cut ends of the pipe
are in square shape.
2. Correct die shall be properly selected and installed on the grooving machine based on
corresponding pipe size.
3. End of the pipe shall be inserted to be grooved in between the groover dies.
4. Pipe stand shall be used in supporting the other end of the pipe.
5. Machine operation can be started after everything is properly fixed. At the same time,
pressure shall be applied on the pipe toward the machine in order the pipe not to slip out of
the groover die.
6. When the required depth of the groove is achieved, machine operation shall be stopped.
4.5.7 Pipe Threading Procedure
1. Pipe Cutting
a. Required length of the pipe threads shall be cut.
b. Ensure that the cut ends of the pipe are in square shape.
2. Threading dies installation
a. Correct die head shall be properly selected and installed. Die head shall have a threading
teethes based on the pipe size.
3. Pipe Threading
a. End of the pipe to be threaded shall be inserted in-between the die head. Then, ensure
that the chuck is holding the pipe properly.
i.
Pipe stand shall be used in supporting the other end of the pipe.
ii.
Machine operation can be started after everything is properly fixed. Ensure
that the die head into threading position is engaged properly.
iii.
When the required thread is achieved, machine operation shall be stopped.
iv.
Loosen the chuck and remove the pipe.
4. Residual threading oil shall be drained into the threading machine tray.
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Method Statement for Installation of Clean Agent Fire Suppression System
4.5.8 Pipe Coupling Installation Procedure
1. Groove Pipe
Pipe ends shall be grooved according to the manufacturer’s specification.
2. Check Pipe Ends
Ensure that all pipes are free from any indentations, burrs or roll marks to avoid leaking
in the gasket seat area.
3. Check Gasket & Lubricant
Ensure that the gasket supplied is suited for intended service. Apply a thin coat of
silicone lubricant to the gasket.
4. Install Gasket
Place the gasket over pipe ends. Ensure that the gasket seating area does not overlap
the pipe end.
5. Join Pipe Ends
Ends of two pipes shall be aligned together and insert the gasket into position centered
between the grooves on each pipe. No portion of the gasket should extend into the
groove on either pipe.
6. Apply Housing
Place housings over gasket and ensure that the housing keys are engaged into grooves.
7. Apply Nuts
Insert nuts and tightened it.
8. Tighten Nuts
Nuts shall be tightened properly and after that, ensure that the housing bolt pads are
firmly together. Nuts shall not be tightened excessively.
4.5.9 Mechanical-T Installation
1. Drill Hole
Follow the drill hole size according to the manufacturer’s specification.
2. Prepare for Assembly
Uninstall the nut and bolt from housing. Loosen the other nut until it is flush with the
end of the bolt. Remove the tape and lift the gasket from Mechanical-T outlet.
3. Check Gasket & Lubricants
Ensure that the gasket supplied is suited for intended service and conform to the
specifications required. Silicone lubricant shall be applied to the gasket evenly.
4. Position Gasket
Use alignment tabs to position gasket into housing properly.
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Method Statement for Installation of Clean Agent Fire Suppression System
5. Position Mechanical-T
a. (Style 920)
Lower housing shall be rotated by 90 degree away from the upper housing. Place the
upper section onto the face of the pipe in line with outlet hole. Rotate the lower
section around the pipe end and close the 2 halves.
b. (Style 921)
Upper section shall be placed onto the face of the pipe together with the locating
collar mounted into the hole. Slide U-bolt end with nut into slot, swing opposite end
into other slot. Apply nut and tighten both sides evenly until finger tight.
6. Check Locating Collar
Check if that the locating collar is located in the outlet hole. This is by rocking the upper
housing in the hole.
7. Insert Bolt
After inserting the bolt into its hole, both nuts shall be finger tightened. Be certain ovalneck of bolt engages recess in housing. Ensure that the locating collar is in the outlet
hole and the positioning lugs are properly aligned.
8. Tighten Nuts
Ensure the upper housing is in complete contact with the gasket pocket area by
tightening the bolt nuts uniformly. Ensure that the assembly is rigid.
4.5.10 Pipe Screw Fitting Installation
1. Check Pipe Length
Length required shall be checked thoroughly in accordance to the approved shop
drawing.
2. Marking & Cutting
Put a mark on the pipe to get the desired length and use hacksaw to cut it. Ensure the
pipe is perpendicular to the hacksaw cut.
3. Threading
Load the pipe in the threading machine and thread it according to the required size.
Ensure the thread of the pipe is in good condition.
4. Wrap Teflon Tape
After the threading procedure, clean the pipe end by removing the oil and wrap it with
Teflon tape.
5. Installation
Install the pipe to the fittings.
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Method Statement for Installation of Clean Agent Fire Suppression System
4.5.11 Nozzle Installation
1. Nozzles shall be installed with the inlet of the nozzle perpendicular to the ceiling. When
installing the 180o sidewall nozzle, the side holes of the pattern are to be parallel with the
wall on which the nozzle is being installed.
2. All nozzles are rated for a maximum hazard height of 16 ft. If hazard exceeds 16 ft in height,
multiple tiers of nozzles must be used for each 16 ft increment of the height of enclosure.
3. The maximum area coverage per nozzle is 1600 ft2 (40 ft x 40 ft). The longest side length is
40 ft (maximum). This maximum length limitation applies for a range in hazard height from 1
ft (minimum) to 16 ft (maximum).
4. The 180° sidewall nozzle shall be adjacent to a wall. The area coverage cannot be exceeded.
Two 180˚ sidewall nozzles may be used at the center of the hazard. They may be applied
back to back, providing area coverage of 3200 ft2 (40 ft x 80 ft).
5. The 180° sidewall nozzle may be installed from 2” to 12” down when referenced from the
ceiling. When referencing the wall to the nozzle, the range of installation is from 0 to 12” off
the wall. For the 180˚ sidewall nozzle reference, the centerline is between the top orifice
and the bottom orifice.
6. The 360° central nozzle shall be installed at the center of the hazard. The area coverage
cannot be exceeded. The nozzle may be installed from 2”to 12” down when referenced from
the ceiling.
7. During nozzle installation, pipe supports shall be rated to support the dead weight of the
piping and the thrust forces of the agent discharge.
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Method Statement for Installation of Clean Agent Fire Suppression System
5 Testing and Commissioning
This section described the commissioning procedure.
Before commencement of commissioning tests visually check the following:
1.
Check that the installation conforms to the engineering drawings. Any deviations from
drawings must be reported.
2.
All work, e.g. electrical wiring, carried out by other contractors has been completed
satisfactorily.
3.
Check the protected area for confinement of the extinguishing agent, i.e. that no passage is
allowed to other spaces through floor or ceiling voids, ductwork, holes in partitions or vents, unless
allowance has been made.
4.
Check that all manual controls are accessible and correctly identified.
5.
Check that the discharge nozzles are unobstructed and are adequately secured. Check that
the nozzles comply with sizes shown on the drawings.
6.
Check that the cylinder and valve manifolds (where applicable) are correctly sized, and that
check valves (where applicable) and Directional valves (where applicable) are installed for correct
directional flow.
7.
Check the manifold to cylinder installation (where applicable) for undue strain on connecting
loops because incorrect installation can cause service problems.
8.
Check the cylinders are installed in an accessible location, that the area is clean, dry and
ventilated and meets the safe temperature requirements.
9.
Check that all system controls, such as valves, lock off, pull boxes, manually or electrically
operated devices, and are accessible to operating personnel. If located outdoors ensure that they
conform to the required standards and that adequate shelter has been provided.
10.
Check that pipes and fittings are sized in accordance with the drawings and are adequately
secured. All piping must be rigidly secured to the nozzle to prevent damage from recoil.
11.
Check that all warning labels and notices give correct information for system operation and
that they are suitably located.
12.
Check weigh of cylinders to ensure net content is in accordance with the requirements.
13.
Check all discharge hose are screw and secure tight at both ends.
14.
Check all copper tubing for pneumatic actuation is secure and screw tight at both ends.
15.
Check that manual lever on the valve is available and is in standby position.
16.
Discharge test should be recommended when there is any question about the adequacy of
the system.
17. Ensure the pressure gauges are calibrated and valid calibration certificates available.
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Method Statement for Installation of Clean Agent Fire Suppression System
WARNING: Do not proceed with any functional tests until every precaution has been taken to
prevent accidental discharge, ensure that all personnel in protected areas know that you are there
and of the work you are doing.
This section described the functional test procedure.
1. Using Nitrogen as a medium, system shall be pressure tested.
2. After the test pressure is reached, Nitrogen cylinder valve shall be closed.
3. Check the pipes, pipe joints and accessories for the possible leakage of air while pressurizing
the pipework and if any, check the fault and rectify.
4. Ensure all the leakages are repaired and the pressure test shall be repeated many times until
a completely tight system is going well. Testing procedure is as follows:
- Pipe line shall be pressurized at 40 psi for 10 minutes. After 10 minutes, the pressure
should not drop more than 20% of the test pressure.
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Method Statement for Installation of Clean Agent Fire Suppression System
Context Plus
175 Mauldeth Road, Manchester, M14
6SG
T: (+44) 161 257 2541
F: (+44) 161 225 8817
Website: www.contextplus.co.uk
Email: sales@contextplus.co.uk
September 15, 2016
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